[펌] http multi file download via javascript

function downloadFile(filesForDownload) {
        i = 0;
        var downloadParts = filesForDownload.split(';');

        while (downloadParts[i] != "") {

            downloadURL("http://" + window.location.host + "/Uploads/" + downloadParts[i]);
            i++;
        } 
    }
    var count = 0;


     var downloadURL = function downloadURL(url) {

        var hiddenIFrameID = 'hiddenDownloader' + count++;
        var iframe = document.createElement('iframe');
        iframe.id = hiddenIFrameID;
        iframe.style.display = 'none';
        document.body.appendChild(iframe);
        iframe.src = url;
    }

출처 : http://stackoverflow.com/questions/19714525/multi-downloading-with-javascript